$\frac{8.1\times10^{3}}{2.7\times10^{8}}=$\na $3\times10^{11}$\nb $3\times10^{-5}$\nc $3\times10^{5}$\nd…

$\frac{8.1\times10^{3}}{2.7\times10^{8}}=$\na $3\times10^{11}$\nb $3\times10^{-5}$\nc $3\times10^{5}$\nd $3\times10^{-11}$

$\frac{8.1\times10^{3}}{2.7\times10^{8}}=$\na $3\times10^{11}$\nb $3\times10^{-5}$\nc $3\times10^{5}$\nd $3\times10^{-11}$

Answer

Explanation:

Step1: Divide the coefficients

Divide 8.1 by 2.7. $\frac{8.1}{2.7}=3$

Step2: Divide the powers of 10

Use the rule $\frac{a^m}{a^n}=a^{m - n}$. Here $a = 10$, $m=3$ and $n = 8$. So $\frac{10^{3}}{10^{8}}=10^{3 - 8}=10^{-5}$

Step3: Combine the results

Multiply the results from step 1 and step 2. $3\times10^{-5}$

Answer:

B. $3\times10^{-5}$